US marshals and Philadelphia homicide detectives captured Shaun Warrick Thursday morning.
Warrick was charged with the Valentine's Day shooting deaths of Marcedes Ivery and Tiffany Barnhill in a home on Rutland Street in the Northeast.
Relatives say the victims were inseparable.
"They were lovely girls, I'm going to miss my niece, I just can't understand who would do something like this to them," relative Cheryl Nesmith said.
Warrick was arrested in a home in the 3800 block of Darien Street.